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The NGM 209M monitor from the RAMSYS product line has been developed to sample air in discharge stacks or ventilation ducts.
The dual silicon diode detector integrated in a 4 π/3 cm (4 π/1.18 in) lead shielded sample volume guarantees high reliability of the measurements.
The first silicon diode detects the beta/gamma radiation from sample volume and the gamma ambient radiation (background). The second one detects gamma radiation from the sample volume and the gamma ambient radiation.
This allows noble gas beta measurement with dynamic gamma compensation by the processing algorithms.
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